Electronic Device Transmission Power Control via Temperature Feedback
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Solution Overview
Problem
Electronic devices using 5G NR technology generate excessive heat due to high frequency bands and wide bandwidths, leading to potential low-temperature burns and communication disruptions, necessitating effective heat management and seamless communication maintenance.
Innovation Solution
An electronic device with a temperature sensor, application processor, and RF module that adjusts transmission power parameters based on temperature thresholds to maintain target SAR levels, ensuring continuous communication by controlling RF module operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If transmission power is reduced to control heat generation, then temperature is reduced, but communication reliability deteriorates
Solution Approach 1:
The patent applies dynamics by making the transmission power adjustable and variable rather than fixed. The communication processor dynamically changes transmission power levels based on real-time temperature feedback from the temperature sensor, allowing the system to adapt between high power (for reliable communication) and low power (for heat control) as conditions require.
Solution Approach 2:
The patent implements feedback control by continuously monitoring temperature through a temperature sensor and using this information to adjust transmission power. The communication processor receives temperature information and automatically modifies RF module power output accordingly, creating a closed-loop control system that balances heat generation and communication reliability.
2Productivity
If high frequency band and wide bandwidth are used to improve communication speed, then productivity is improved, but heat generation increases
Solution Approach 1:
The system dynamically adjusts transmission power based on temperature conditions, allowing high-speed communication modes (high frequency band and wide bandwidth) to be used when cooling conditions are favorable, and reducing power when temperature rises, thus balancing productivity and heat control.
Solution Approach 2:
The patent changes the transmission power parameter in response to temperature variations. By adjusting this key parameter, the system can operate at high performance levels when acceptable and scale back to maintain thermal safety, directly addressing the trade-off between communication speed and heat generation.
3Temperature
If transmission power is reduced to control heat, then temperature is controlled, but transmission quality deteriorates
Solution Approach 1:
The feedback mechanism ensures that transmission power is reduced only when and to the extent necessary for temperature control. The communication processor continuously monitors temperature and adjusts power accordingly, maintaining the highest possible transmission quality while preventing overheating.
Solution Approach 2:
The system dynamically balances transmission quality and temperature control by adjusting power in real-time. When temperature is within acceptable ranges, full power is used for optimal transmission quality. When temperature rises, power is dynamically reduced to maintain thermal safety while minimizing impact on transmission quality.
Data Source
AI summary
An electronic device is provided. The electronic device includes a temperature sensor, an application processor, a radio frequency (RF) module, memory, comprising one or more storage media, storing instructions, and one or more communication processors communicatively coupled to the temperature sensor, the application processor, the RF module, and the memory, wherein the instructions, when executed by the one or more communication processors individually or collectively, cause the electronic device to acquire, from the application processor, information related to the electronic device temperature measured by the temperature sensor, determine a parameter related to the transmission power of the RF module on the basis of the electronic device temperature, and control the RF module on the basis of the determined parameter.